Comparative Effectiveness Research/methods; Comparative Effectiveness Research/trends; Cross-Cultural Comparison; Outcome Assessment, Health Care/methods; Outcome Assessment, Health Care/trends; Patient-Centered Care/methods; Patient-Centered Care/trends; Adolescent; Adult; Back Pain/diagnosis; Back Pain/prevention & control; Back Pain/therapy; Child; Forecasting; Germany; Health Education/methods; Health Education/trends; Health Priorities/trends; Health Services Needs and Demand/trends; Humans; Mass Screening; Methicillin-Resistant Staphylococcus aureus; Overweight/diagnosis; Overweight/prevention & control; Overweight/therapy; Primary Prevention/methods; Primary Prevention/trends; Staphylococcal Infections/diagnosis; Staphylococcal Infections/prevention & control; Staphylococcal Infections/therapy; United States